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davew March 4th, 2010 03:26 AM

just reading the threads about bleeding the coolant system and thought better do it as bike been standing all winter.problem is cant find the beed bolt on head.i know someone said its on the plug side by decompression cable but cant see it.the bikes a 2003 fs650 also have a550 2003 engine sitting on bench and cant see it on that either.any more clues or even a photo would be great.
sorry for seeming thick but need to find it thanks

Number9 March 4th, 2010 10:02 AM

From the owner's doc on the right ... .sized.jpg

Here maintenance video that shows how to do with out the bolt. I think its in 2/4 ... nt=safari#

davew March 4th, 2010 12:33 PM

cheers for that much appreciated

ggimp May 23rd, 2018 12:06 PM

Links are dead

I have issues bleeding the coolingsystem and I found this post but the links dont work. I have a husa FS 650e 02 and donít know where to begin.

ede May 23rd, 2018 10:50 PM

3 Attachment(s)
Hi ggimp,

if I remember correctly, the bleeding bolt in the cylinder head was introduced with the 2004 engines. Prior engines don't have it.

Here on the forum you'll find the husaberg manuals - I don't have the link right now, but I can send you the 2002 docs! There must be a google drive link somewhere with all the docs!!!


ggimp May 24th, 2018 12:39 AM


I guess I just fill it up and watch the temperature then. I was adjusting the carb and I guess I had the bike standing still for to long. Maybe the problem with overheating in this case is just because I was to slow (had a few beers...)
Shouldn't the cap release some pressure in that case?

ede May 24th, 2018 01:20 AM

According to the Husaberg Owners Manual 2004, page 23:

"NOTE: Dedicated to nothing but offroad racing, Husaberg models make no compromises in their design. As such, they do not include any radiator fan, and the size of the radiator is dimensioned for optimum ergonomics. In normal racing, the cooling system is sufficient. If you use your motorbike in other conditions, please note that: the E-starter allows you to start FC/FS models again at any time. Therefore, turn off the engine if you intend to run your motorcycle in idle or at a standstill for longer periods of time (more than 2 minutes). Avoid letting the clutch slip frequently and for extended periods. This would cause the engine oil to heat up, thereby heating up the cooling system. You should drive at low speeds (4-stroke style - letting the engine pull you) and not at high speeds not by letting the clutch slip (2-stroke style)."

So, it's a driving machine and not made for idling!

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